package com.ht.common;



import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;


public class Filedownload {
    public static boolean myDownLoad(String fileface, String fileName, String encoding, HttpServletResponse response, HttpServletRequest request){
        try {

            // path是指欲下载的文件的路径。

            File file = new File(fileface);

            // 取得文件名。

            String filename = file.getName();

            // 取得文件的后缀名。

            String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();

            // 以流的形式下载文件。

            InputStream fis = new BufferedInputStream(new FileInputStream(fileface));

            byte[] buffer = new byte[fis.available()];

            fis.read(buffer);

            fis.close();

        // 清空response

            response.reset();

        // 设置response的Header

            response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));

            response.addHeader("Content-Length", "" + file.length());

            OutputStream toClient = new BufferedOutputStream(response.getOutputStream());

            response.setContentType("application/octet-stream");

            toClient.write(buffer);

            toClient.flush();

            toClient.close();

        } catch (IOException ex) {

            ex.printStackTrace();

        }

        return true;

    }

}